//
//  Dog.h
//  ARC多对象管理与相互引用的解决
//
//  Created by hyl on 16/4/2.
//  Copyright © 2016年 hyl. All rights reserved.
//

#import <Foundation/Foundation.h>
@class Person;
@interface Dog : NSObject
@property(nonatomic,weak) Person *ower;
+(instancetype)dog;
@end
